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Anastaziya [24]
3 years ago
12

Which expression illustrates the associative property of addition?

Mathematics
2 answers:
Taya2010 [7]3 years ago
3 0
<span>associative property of addition
(a+b) + c = a + (b +c)

hope that helps.....</span>
andrew-mc [135]3 years ago
3 0

Answer:

the answer is (3 + 19) -12 = 3 + (19 - 12)

Step-by-step explanation:

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Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv
uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

z_{score} = \displaystyle\frac{x-\mu}{\sigma}

P(more than 4.25 minutes to solve a problem)

P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)

= 1 - P(z \leq 1)

Calculation the value from standard normal z table, we have,  

P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

8 0
2 years ago
Which statement best describes the 50% rule?
Klio2033 [76]

Answer:

1. $18.75

2.$83.75

3. Individuals should spend up to only %50 of their medium-term savings then build savings back up.

4. Permanent life insurance policies insure policy holders for as long as they pay a premium.

5. She saves $84 (here is the link with the work brainly.com/question/12276113)

Step-by-step explanation:

Just took it and got all the multiple choices right.

have a good day :)

7 0
3 years ago
A cone has a diameter of 22 inches and a height of 4.5 inches.
creativ13 [48]
We know, Volume of a Cone = πr² h/3
v = 3.14 * (11)² * 4.5/3
v = 3.14 * 121 * 1.5
v = 569.91 in³

In short, Your Answer would be Option C

Hope this helps!
7 0
3 years ago
Read 2 more answers
Add these fractions just pretend / means fraction
CaHeK987 [17]
Answer is 16 1/3. hope that helps
8 0
3 years ago
Z=x/y -3r make x the subject
satela [25.4K]
Z = x-y(3r)/y
z = x-y * 3r/y
Final answer: x = yz + 3yr
6 0
2 years ago
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